# Document history

<table><thead><tr><th width="104">Version</th><th width="126">Released</th><th width="85">Author</th><th>Remarks</th></tr></thead><tbody><tr><td>0004</td><td>2022-09-01</td><td>makr</td><td><p>SNTP server must be accessible.</p><p>Disable Periodic Ping Reset if a network gateway does not answer to ping.</p></td></tr><tr><td>0003</td><td>2022-02-11</td><td>makr</td><td>WIN Gateway is created from Uninstalled Gateways list.</td></tr><tr><td>0002</td><td>2021-11-16</td><td>makr</td><td><p>Gateway firmware update.</p><p>Gateway exchange procedure.</p><p>Empty linked list.</p></td></tr><tr><td>0001</td><td>2021-09-29</td><td>makr</td><td>First release</td></tr></tbody></table>